---
product_id: 11870898
title: "Dayco 89378 Belt Tensioner"
brand: "dayco"
price: "€ 127.73"
currency: EUR
in_stock: true
category: "Dayco"
url: https://www.desertcart.pt/products/11870898-dayco-89378-belt-tensioner
store_origin: PT
region: Portugal
---

# Vehicle-specific compatibility Precision serpentine belt fit Durable Dayco engineering Dayco 89378 Belt Tensioner

**Brand:** dayco
**Price:** € 127.73
**Availability:** ✅ In Stock

## Summary

> ⚙️ Keep your engine running smooth — don’t let belt slack slow you down!

## Quick Answers

- **What is this?** Dayco 89378 Belt Tensioner by dayco
- **How much does it cost?** € 127.73 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/11870898-dayco-89378-belt-tensioner)

## Best For

- dayco enthusiasts

## Why This Product

- Trusted dayco brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Lightweight Yet Robust:** At just 2.1 pounds, it balances strength and ease of handling for quick maintenance.
- • **Trusted Dayco Durability:** Crafted by Dayco, a leader in automotive parts, guaranteeing long-lasting performance.
- • **Serpentine Belt Specialist:** Optimized for serpentine belt systems, delivering smooth and reliable tension every time.
- • **Tailored Fit for Your Ride:** Ensures perfect compatibility with your vehicle’s year, make, and model for seamless installation.
- • **Highly Rated by Professionals:** Boasts a 4.6-star rating from nearly 400 users, reflecting trusted quality and satisfaction.

## Overview

The Dayco 89378 Belt Tensioner is a precision-engineered serpentine belt tensioner designed for vehicle-specific fitment. Weighing 2.1 pounds and backed by a strong 4.6-star user rating, it ensures reliable belt tension and durability, making it a top choice for automotive maintenance and replacement.

## Description

Dayco 89378 Belt Tensioner

## Features

- Many products require vehicle-specific fitment
- View the Compatibility table to ensure the part fits your year, make, model and submodel
- Please reference the submodel information located on the far left within the Compatibility table under "Notes"
- Please note: Due to our high sales volume, it may take up to 2-business days for us to reply to all questions and/or requests.
- We do not offer shipping to APO/FPO

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0076H3304 |
| Belt Style | Serpentine Belt |
| Best Sellers Rank | #266,752 in Automotive ( See Top 100 in Automotive ) #308 in Automotive Replacement Belt Tensioners |
| Brand Name | Dayco |
| Color | Black |
| Compatible Devices | Car |
| Customer Reviews | 4.6 4.6 out of 5 stars (397) |
| Global Trade Identification Number | 00036687616708 |
| Included Components | Belt Tensioner |
| Item Type Name | Belt Tensioner |
| Item Weight | 2.1 pounds |
| Manufacturer | Dayco |
| Number of Items | 1 |
| Part Number | 89378 |
| Style Number | 89378 |
| UPC | 036687616708 |
| Unit Count | 1 Count |
| Warranty Description | Includes manufacturer provided warranty |

## Product Details

- **Belt Style:** Serpentine Belt
- **Brand:** Dayco
- **Color:** Black
- **Compatible Devices:** Car
- **Item Weight:** 2.1 pounds

## Images

![Dayco 89378 Belt Tensioner - Image 1](https://m.media-amazon.com/images/I/815RQ0BDuyL.jpg)

## Frequently Bought Together

- Dayco 89378 Belt Tensioner
- Dayco 89502 Idler/Tensioner Pulley
- Dayco Drive Rite 5080950DR Serpentine Belt

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**Shop now:** [https://www.desertcart.pt/products/11870898-dayco-89378-belt-tensioner](https://www.desertcart.pt/products/11870898-dayco-89378-belt-tensioner)

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*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-08-26*